use correct paramter type for calling readJson

hopefully fixes "message confusion" and occasional exceptions

Jira-issue: WP-1258
Merge pull request #67 from aldafu/WP-1258-fix-call-to-readJson

use correct paramter type for calling readJson
Sync and logging improvement

Jira Issue: WP-1264
Sync handling

Jira Issue: WP-1264
Merge branch 'WP-1264-pzhSync' of https://github.com/habibvirji/webinos-pzp into WP-1264-pzhSync

Conflicts:
	lib/pzp_receiveMessage.js
	lib/pzp_sendMessage.js
	lib/pzp_syncHandler.js